1)   Digital Music Mentor 2.5 Sienzo offers you a cheap and simple software that derives the chords and tabs for every song in the world. The software is an advanced tool for learning and develop your instrumental skills. You can even see how to play the chords! 2)   Digital Music Mentor 2.5 Sienzo offers you a cheap and simple software that derives the chords and tabs for every song in the world. The software is an advanced tool for learning and develop your instrumental skills. You can even see how to play the chords!